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      08-14-2020, 04:02 AM   #1
tree233
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Coding the coolant warning alarm to a lower temperature

Has anyone successfully used NCS Expert to code the amber coolant warning alarm to a lower temperature, much like the E39 crew have been doing for some time?

https://www.bimmerforums.com/forum/s...2#post29768882

I've read in numerous posts that the N52 warning is set to 120 C, and the engine operates at different coolant temperature targets depending on the driving style. The eco mode target is 112 C apparently.

It should never go over 112 C as the cooling system is "allowing" the temperature to reach this high in eco mode, and provided that all is working properly it can reduce that temp to ~85 C within seconds if you change your driving style.

So there's no reason that it should ever go over 112 C unless something goes wrong, so if possible I'd like to set the warning to 115 C and have that extra safety buffer.
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      08-15-2020, 01:38 PM   #2
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If I remember rightly, N52's are designed to run hotter, I would not change that.
Not sure, what the gain is,, hoteer engine is more economical and runs better than a cold engine. now colder air going into the intake is where it's at !
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      08-16-2020, 12:00 AM   #3
tree233
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Yeah cold IAT is definitely a good thing!

I don't want to change the running temperature, just hoping to change when the alarm goes off for a bit more of a safety net since I track my car.
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      08-16-2020, 08:10 AM   #4
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Quote:
Originally Posted by tree233 View Post
Yeah cold IAT is definitely a good thing!

I don't want to change the running temperature, just hoping to change when the alarm goes off for a bit more of a safety net since I track my car.
Would it be better to log or gauge your water pump duty cycle?

The thermostat goes wide open around 180 and then the water pump and fan speeds are used to control the temp. I can log them with TestO so I'm pretty sure the Bimmergeeks app or anything similar can do the same.
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      08-16-2020, 10:50 PM   #5
tree233
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Hey rjahl, if I understand correctly this would give me an idea of how hard it's pumping, and under what conditions, which would indicate if there's an existing issue with the cooling system, right?

Does it give any "live" additional safety net in the case of a failure? So I can pull over and switch off asap?
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      08-17-2020, 11:04 AM   #6
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Certain apps give us the ability to monitor the requested water pump speed as a percentage. This would be live, DME provided data.

If you wanted an alarm set point, you would need to discuss that with the Software developer. Not sure if any of them allow an alarm on the custom gauges. I'd check with Dylan at BimmerGeeks.
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      08-20-2020, 04:50 PM   #7
Olgeezer1
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If you want to monitor water temps. you could just use something like a "ScanGauge" by Linear Logic. Velcros to your steering column and monitors Water temp., Volts, Intake air temp. and several other things. Monitors 4 things at once, not expensive, no installation required. Won't give you an alarm but you have a constant readout. Steady cruise on mine shows around 100 degrees C , dropping into the 80's when pushed as mentioned above. These high temps. are for emissions and fuel economy not longevity. I'd much rather have lower cruising temps for longer life of all the underhood rubber and plastic but the computer controls all that and it doesn't seem possible.
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      08-24-2020, 11:21 AM   #8
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OH I see ! so you want it to tell you sooner rather than later

gotcha

on an answer PASS LOL !

Quote:
Originally Posted by tree233 View Post
Yeah cold IAT is definitely a good thing!

I don't want to change the running temperature, just hoping to change when the alarm goes off for a bit more of a safety net since I track my car.
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